Professional SEO consultancy: what you are buying, how it is priced, and how to judge one before you sign

A professional SEO consultancy sells decisions: a diagnosis of why the site is not earning the search demand in its market, a prioritised plan, and the direction of whoever executes it. That is the difference between a consultancy and an agency, which sells delivery, and a freelancer, who usually sells hours on one task. You judge a consultancy on four things, and all four are visible before you sign: a written scope that names deliverables rather than activities, a named person who will actually do the work, how they ask for access to your accounts, and what the first report will contain. Google publishes its own guidance on hiring in Do You Need an SEO?, and the shortest useful line in it is this: "No one can guarantee a #1 ranking on Google."

This page is about buying consultancy at a professional standard, for a business with a real budget and something to lose. If the budget is small, the order of spending changes and we have covered it separately in affordable SEO consulting services.

Consultancy, agency or freelancer

You are buying	From a consultancy	From an agency	From a freelancer
Direction	The core product: diagnosis, priority order, the plan your team works to	Included, and shaped by what the agency can staff	Within one discipline
Execution	Often yours, directed by them	Theirs, at volume	Theirs, on a defined task
Best when	You have people who can ship but nobody deciding what	You need output and have nobody to produce it	One specific job is the bottleneck

The reason this matters commercially is that retainer money buys very different amounts of progress depending on which you bought. A consultancy retainer spent on a team that cannot execute produces documents. An agency retainer spent where the real problem is strategic produces activity with no direction.

What should be named in the scope

Activities are not deliverables. "Technical SEO" is an activity. These are deliverables, and a professional firm will put them in writing.

• A findings document with every issue ranked, and the reason each one sits above the next.
• A keyword and demand map tied to your commercial lines, not a list of 3,000 terms.
• A page level plan: which pages get built, which get merged, which get left alone.
• Briefs your writers or developers can work from without a meeting.
• A measurement setup, with the baseline recorded on the day work starts.
• A named monthly report with the decisions it should trigger.

Google's guidance says an audit "should be about giving you realistic estimates of improvement, and an estimate of the work involved". A findings document with no estimate of effort is half a deliverable.

How the work is priced

• Diagnostic, fixed fee. One piece of work with a defined output. The right first purchase with a firm you have not used before, because it is a real test at a known cost.
• Retainer. A monthly fee for a standing commitment. Ask what happens to unused time, and whether the named consultant is on it or a junior is.
• Day rate. Useful for workshops, migration planning and a second opinion. Fastest to buy and easiest to stop.
• Fixed scope project. A migration, an information architecture, a content programme. Price this one on the deliverable, never on the hours.

Ask for the fee split between the named consultant and the rest of the team. A firm that cannot answer is selling you a brand and staffing it with whoever is free.

The interview, starting with Google's own questions

Google's hiring page suggests asking for examples of previous work and success stories, and whether the firm follows the Google Search Essentials. Add these.

• Which of your clients can I speak to, and which one did not go well?
• Walk me through a diagnosis you got wrong and how you found out.
• What would you need from us for this to work, and what happens if we cannot provide it?
• Which three things would you look at first on our site, and why those three?
• Who writes the deliverables, and is that person in this room?

The last one catches the most common disappointment in this market, which is the senior who sells and the junior who delivers. It is a workable arrangement when it is disclosed and priced accordingly.

Access, and the rule worth following

Google's guidance is specific on this: when a consultancy offers an audit, "only grant read access to Search Console (at this stage, don't grant them write access)". Read access is enough to diagnose. Write access is enough to change settings you did not ask them to change.

Beyond that, ownership. Your company should own the Search Console property, the analytics property, the ad accounts, the domain registration and the CMS administrator account, with the consultancy added as a user. Everything a consultancy produces for you, including research files, should be deliverable in a format you keep. Settle this in the contract rather than at the end of the relationship.

The warning signs

• A guaranteed ranking. Google's own wording: "Beware of SEOs that claim to guarantee rankings, allege a special relationship with Google, or advertise a priority submit to Google." If a firm promises you first place, the page says to find someone else.
• Unwillingness to explain what they will do. Secrecy about method is a tactic risk you inherit, not a trade secret.
• Link buying presented as outreach. Read the spam policies once so you can recognise the description.
• A proposal with no baseline numbers in it. They have not looked at your data yet.
• A tool screenshot used as the argument. Google states that it does not evaluate or endorse third party SEO tools and that those tools do not have access to its internal data, so a vendor score is one firm's opinion, not a verdict.

What the first ninety days should produce

Month one: the diagnosis, the baseline, and the first five fixes with owners and dates. Month two: those fixes shipped, verified live, and the first content or structural work briefed. Month three: a measured read against the baseline, and a revised order of work based on what moved. If month three is the first time anybody shows you a number, the engagement was never set up to be judged. Our questions to ask before hiring a marketing agency covers the procurement side in more depth.

What buyers ask before signing an SEO consultancy

How long before a consultancy's work shows up in search?

Technical corrections can register within weeks of being crawled. Work that depends on new pages earning authority takes longer, and the honest answer from a consultancy is a range with the reasoning attached. Ask them to name the first thing they expect to move and when, then hold the engagement to that.

Is a consultancy worth it if we already have an agency?

Often, yes, and it is one of the cleanest uses of consultancy money. A consultancy that writes the plan and reviews the agency's output gives you an informed second opinion on work you are already paying for. Say so to both sides at the start, and define who decides when they disagree.

What should we prepare before the first call?

Your commercial priorities for the next year, the products or services that carry the margin, read access to analytics and Search Console, and a frank account of what your team can execute. A consultancy that gets this in advance arrives with a view instead of a discovery questionnaire.

How do we judge the work when rankings move slowly?

Judge the leading indicators you control: issues closed, pages shipped against the plan, crawl and indexing coverage, impressions on target queries, and click through rate on pages already ranking. These move first and they are the honest early evidence that the plan is working.

Should a consultancy be local to us?

Only when the work is local search, where someone who knows your city's competitive set and can visit for photography and listings has a real advantage. For national or international search, pick on sector experience and the quality of the thinking in the proposal.

One question to add to the shortlist call

Ask each firm to show you what an assistant says when somebody asks for a recommendation in your category. The answer is worth having on its own account, because a good share of buying research now begins in a chat window rather than on a results page, and what ChatGPT, Gemini, Perplexity, Claude or Google's AI Overviews write about your category is assembled from third party pages, reviews and directories rather than from your own site. It is also a sharp test of the firm in front of you: one that has looked will tell you who gets mentioned, where those mentions come from and what it would do about them, while one that has not will steer the conversation back to rankings. AI Knows Us answers the first half of that, which leaves you free to judge the second half, and arriving at a shortlist call already knowing what the assistants say about you changes the standard of the whole meeting.